Warp roll



Nov. 6 ,1923.

R. THORNTON WARP ROLL Filed March 31 V of four slabs Patented Nov. f

' my} 'rno nn'ron, on

WAR-r 3on1.

- A pp1ication fi1ed March sij ecs.

of'New Bedford, in the county of Bristol 7' and State of Massachusetts, haveinvented a new and useful Improvement in VWarp Rolls, of which the following is a spe'cifi cation. p 7 Y My invention relates to warp rollsand the like, and its object, generallystated,is

to improve the constructionof such devices in the manner hereinafter -.more fully set forth. I

I Warp rolls as usually consist of two semi-cylindrical slabs each provided with an oblong groove on.

its flat side, and rings, bands, or other fastening means arranged on the ends to hold the same together.

structed, r the square 'openlng running through the center thereof and formed by the oblong grooves disposed as aforesaid in the juxtaposed flat sides of the two slabs making up the roll, the slabs are subjected to heat and dampness, It has also been found that the two members making up the roll frequently become separated. v is It is therefore the specificobject of my invention to provide a warp roll, the central aperture of which will not be affected by the action of heat and dampness by virtue of the resisting power of the diverse angular arrangement of the grain of the slabs'making up the roll.

Another object of my invention is to provide means whereby the several slabs may be so joined or connected together'that it will be practically impossible for them to:

become separated in ordinary use, the joints between the 'severalmembers being Self tightening, and not adversely affected "by dampness. r i I With the foregoing objects invention comprises a warp roll made up co-extensive in length with the lengthof the roll, each slab having two straight sides of unequal width disposed at right angles to'each other and an arcuate straight sides, the wider straight side of each slab being arranged at right anglesito the wider straightsides of the contiguous slabs and spaced away from the wider straight side of the nonsides. of said four s It is a matter of common experience that in warp rolls so con becomes distorted when in view my 3 7 through Serial No. 529,100,

wider straight side of its ta ta matnnasems i contiguous Islab which is'parallelajthereto, 1 g athefnarrowerstraightsideof each slab being secured, "as f or'example' bya doveq ail taper-' a ing throughout the lengthjof; the slab to the; contiguous slab,

and the roll being bound; by the arcuate, 1

bs. In the drawings which form a part of this specification- Figure 1 is .an end of each of'fou'rl identical tingous slab;" V o -Fig. 2 is an 'end' view of said plinth view of a; hollow V v plinth-formed by securingthenarrower side 1- Y slabs oblong in q r I cross-section to the wider side of its con-1 heretofore constructed Y q cmi y an turned down to circular cross-section to 4 form my improved warp roll; and

Fig.3 is a plan view of one of the slabs shown in Fig. 1,7sa1d view being taken from the point A. I r r a p In the particular drawings selected for more fully disclosing my invention 10,11,

12, 13 are identical slabs oblong in crosssection, each having a dovetailed mortise 14: cut in its'wider side, anda'dovetailed tenon 15 formed in its narrower side, ea ch' cut by'a dovetailing machine of the Lynder-j mortise and tenon preferably'being tapered f l throughout'the length of the slab as indieach contiguous pair} a man type whereby taper 5 dovetails may be' formed with great accuracy each slab being run through the machine in one direction to form the (mortise on its wider side, andthen in thefopposite" direc'-' tion to form the tenon on lts'narrower side.- ,1

labs are properly shaped,

When the four they may be assembled in the manner shown in Figure 1, and'thehollow parallelopipedl so formed-is then centered drying out ofthe wooden ness onaccount of the resistance-offered by I and'turnedldowfi i 4 to form a cylindrical. roll as"; shown in s above set forth will not be twisted' V or distorted by the slabs, or by theaction of heat and damp;

the slabs, the gra n'of which i arranged 1 info? ral directions- Furth f i ol" the taper wedges by means of which each;

slab is joined to its two contiguous slabs" successfully resist any tendency of shrinkiiog age or contraction or expansion due to to the wider straight sides of the contiguous changes in temperature, ,humidity eto, to slabs andspaced away from the wider se arate theseveralmembers. straight side of the non-contiguous slab V aving thus described an illustrative emwhich is parallel thereto,"and the narrower 5 'bodiment of my invention without however straight side of each slab being secured to limiting the same thereto, what I claim and the wider-straight side-of its contiguous 20 desire to secure by Letters Patent is I slab by a dovetail tapering throughout the A warp roll comprising four slabs 00- length of the slab, said roll being bounded extensive in length with the length of the by the arcuate sides of said four slabs.

10 roll, each said slab having two straight sides In testimony whereof, I have hereunto of unequal Width disposed at right angles subscribed my name this 26th day of March, 2 to each other and an arcuate side joining 1923. i v 7 1 said straight sides, the wider straight side V v of each slab being disposed at right angles flll-IORNTON. 

